bio 14 lab 1 - different shell thickness we allowed the...

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Melanie Garcia Lab report Darwinian snails Abstract: Introduction:
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Materials and Methods: In this lab we used the Simbio virtual labs software to simulate different evolutionary conditions and the overall effect they have on a population. Exercise 1: A model of evolution by Natural selection Upon opening the program, for this exercise we started with a population of snails. The snails varied in colors, the different colors represented different shell thickness. We began with a population of 50 snails and used a claw tool to manually simulate a crab eating the snails. After “eating” 25 snails of
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Unformatted text preview: different shell thickness we allowed the snails to reproduce. The snails cloned themselves then died. (Symbio Labs, 2009) We repeated this process three more times and then viewed the new population. The next step in this exercise was to introduce crabs that automatically reduced the snail population. We brought them down to 25 and allowed them to reproduce as before. References Sadava, Heller, Orians, Purves and Hills 2008 Life: the Science Of Biology 8 th Edition Simbio Virtual labs 2009 Darwinian Snails student workbook...
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This note was uploaded on 09/25/2010 for the course BIO 14 taught by Professor Sarno during the Spring '09 term at Hofstra University.

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bio 14 lab 1 - different shell thickness we allowed the...

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